Splitting-machine



. E. W. SMITH. SPLITTINGA MACHINE. APPLICATION man 0m24.191s.

Patented Mar. 23, 1920.

2 SHEETS-SHEET l.

E. W. SMITH.

SPLITTING MACHINE.

APPLICATION FILED OCT. 24, 15H8. 1,334,323. Patented Mar. 23, 1920.

2 SHEETS-SHEET 2.

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'ommen STATES PATENT ounion.

EDWIN W. SMITl-, BEVERLY, MASSAHETTS, ASWGIGNO'R TO UNITED SHOEl MACHINERY CORPORATION, OE PATEREON, NEW JERSEY, A CORPORATIONOF NEW JERSEY.

` Specification of Letters Potent.

fzitentefl M or. 23. 1920.

Application led October 24. m15. Serial No. 359,577.

prfoernents .in SplittingdVluchines, oi? which too "lollowing' description, in connection with the ecconipenying drawings, is e speci- Alcotio-na like reference characters on the drewini `indicetingl like parts in the seveml ligure '.llhls invention relntes to cutting machines :1nd is herein illustretod :is enibmfliedin :i machine .tor producing rends end welts, 'for shining; tops und lfor preparing verious urtlclcs for use in the nrfmulfocturo ol? boote und shoes.

Yln splitting o strip oli stock `di:igonelly troni oorner to corner to nfoduce rends or in splitting i strip by :i cut extendin,e` from n point spuced :troni one comun: to e point spliced @quelliT from the diegonelly opnotdte corner to produce nelte, machines here been einplfiiyed in 'which the strip .le 1to1-ced #telnor-at un inclined knife by two rolls, the l` the rolle :nite being connected with one `oit n such mennen that the extent et its inclino." tion depcinle upon the extent to which the rolls ero .seperated by the steelt. hlnchines "for n rl'orniingg this operation are usuull'y provided with n. stripping knife so Thot in :t single obernticn n strip is out 'trein :i sheet `oil stock und the strip split on on ingle :te has been described `above. C rnonlj :in edge gege is in'o'vided the 'nos n eil which tetex-1n ze the width oil* the strip. .ln snch :i nizicbine the etri'n p11-ogn'essii'hly,out ol'l und ded betneeil the edge enge and the str no; ltnilfo to the teed rolls und the te. llt desiruhle tlntt the oil engnler ,menu-nt oil the spl" tino; lfm slionld i'eg l,i.ater with the long. u ,nml center lino ot the strip so that. wheft ver` the verle` tion in. thickncfsf-2y ol' the strip. it shell he split into two eenzil portions. .llitherto this olinew nient oit the exis of zrngulztr movement olf the splitting: ltnit'e with the longitudin-.tl center line o'l the strip hue been etrictly possible tor only one width of strip and i when e. strip olf' n dittei'ent Width was to be o Jereted upon, the splitting knife hos been bof ily edjusted 'upwardly o1' downwardlyto bring; its exis of angular n'iovemerm4 es nearly us is lirossible by such adjustment, into alimentent with the center lineof the strip. `tltliongh angle.

such en idjinati'nent will servo pruoteully lor splitting); strips which do not vitry r1 1'; o in width.. the error involved will 1ncreer-lo in proportion to the extent to which the sl' im to be split ditier :ininv'idth so that u nmchme which is; built to split it strip ot medium width :wcurzttellf into two euml parts ol trilnigulur or trepezoidel outlim in `crolss-scctioi1 will not split ccuretelyr stripe `which :ire very `wide or ver); narrow.

One object oit the present ini* ion is to provide :t relntive bodily 'firljuetnient between the lltnile .Lnd the gul el.' ineens lfm' the e ip snchtlint the exis or nngulei' mono ment of' the lolite moy be brought into linonunit with the center line oi strips oil" dillfel,l` ont Widths. In the illustraitive n'mcliine the npljittinh lolite carrier is bodilyv :ulgiusteble v-ridthiflfise oil tho strip.` to bring; :about the desired ifellttion betwefui its :mis nml the ceuter line o'l the strip. l

This; ond other objects ot the invention, will he described :is embodied inA :in illu stretiro umohine ond pointed ont in the :lopend ed claims.

l `iguro l is n olain ot" n. inechine in wllirh the 'present `iinfsition is cnnlwdied;

Fig. 2 n. ei e elevation;

Finn 3 ie :L roer olevetion;

Fig. l1 is e. crees-section on the lettdnlofl election line el? Fig. 2;

Fig. 5 is :t perspective showing;w e sheet et Fig, (i is o pei'epective oit the splittingr ltni ond its n'lounting, end

Fig. 'l' is o. Crosseection on the` right-hund ooction line ol" Fig. 2.

The illl'fstrzitivo iemchino ie similnr in its mode of opeiution to th-.it olf the nntchne oli Pzttci'it No. 1,025,5tl, granted Moy 7, 1912. il. sheet oil 1 @I 11.0() euch. es leather el'ed by zin upper feed roll l, on the rotatable shaft Ill und a. lower 'toed roll /l on the rotetuhle filmt-t 5 to u. stripping; knife 7 `which cuts o .strip from the sheet l(ind `to :in inclined li'n'lfe 9 which splits the strip on en The cut oit the knife 9 muy extend corner to corner of the strip to forni two ronds or, es shown in Fie: o, dfegoneflly from o point spaced frein the upper rightwlum'xd corner to o. point simi.'- lltrly located Vwith respect to the lower leftu hand corner .to :form two McKay Welts.

lllll) Y areA formed has Y spring.

.move equally in opposite directions. The

upper shaft 3 1s mounted in bearings in a casting' 11 having rcaufvvardly extending arms 13 the hubs of which are fast to a rockshaft 15; and the lovver shaft 5 Ais similarly mounted in bearings in a casting 17' having rearwardly extending,` arios 19 the hubs of which are loose von a rotating shaft 21 located below the rock-shaft 15. In order to urge the feed rolls at all. times to fard each other as well as to compel n'iovenient of one roll to cause equalmovenient ot' the other in the opposite direction. the casting in which the bearings of the shat't 3 are formed has a projecting' arin 113 (see Figs. 1, 2 and which extends rearwardly. then downwardly and'then rearwardly again; and the casting' in which the bearings of the shaft 5 an arm 119 which extends rearwardly, then upwardly and then rez rwardly again. A coiled spring' 23 is under tension between the rearmost portions ot' .these arms 113 and 119 tendine at all times to separate such portions and thereby to cause the feed rolls to approaca each other. A rod 25, the threaded ends of ivhich extend i'reely through perforations in the ends of the arms 113, 11i), passes through the coiled Nuts 217, 29 on the ends of the rod contact with the arms and liniit the extent of their separation. The vertically extending portions oil each ot' the arras 113,119 has formed thereon inclined 'ack-teeth (see Figs. 1 and` 3) with which meshes a. bevel pinion 30, 'said pinion being freelyrevoluble on a pivot carried bythe fraaie oi" the machine. When the feed rolls are separated or caused to approach each other,V the extent 'of their movements is thus always equal, the

purpose of this construction beingto mainvtain the cei'lter o the leading' end of the #tripl o'i' stock in the plane vwhich contains the axis of angular movement o'ftho .split- "ting" lknife. 9 irrespective oi'y variationsA in thickness of the stock-as will described more in detail.

The lower feed roll is driven direct-ly from al large gear 37 on the drivin g' shaft 39 which meshes with a gear 4 1 on the slia'ttf ol the lower feed roll. The upper feed roll is driven `trom the lower feed roll by floating,`

presently be ngears 45, 43 which mesh respectively with a lrear t7 on the shaft shaft 5 Banda ,Q'ear 49 on the aswell as with each other. The

f Y shaftsof ythe floating gears 45. 43 are con- V4(it) nected'witheach other by links 51 and reshafts 3 and 5 by links lVith this'eonstruction the sepa-rev tion ofthe rolls, 1 and le does .not dist-urb the mesh of the driving gears.j

The l'stripping knife 7 is Vadjustably vclamped in a split holder by a pinch-bolt 57.' 4The splitting knife 9is slidably mounty stop in the forni of an arm 61 havingA a coni` cal forward end which is received in a `groove in the rear end of the knife, the hub o i the arm being,I loosely mounted on a rod ($3 and being engaged by a thumb-nut (S5 threaded on said rod. The pressure of the work against the edge ot the knife holds the kni i'e against the stop, said stop being adj ustahle by means of the. thumb-nut (55 to determine the longitudinal position ol.I the knife. l'lhe cylindrical knife holder 59 is angularly nuovable about the central longitudinal axis oIIv the knife, being thus movable in a stationary cylindrical carrier GT having a slot 69 in the stem thereof to receive a screw-bolt T1 hv which it adjustably fastened in vertical position to a bracket T2 which if; in turn horizontally adjustable on the traino ot the machine and held in adjusted position b v a screw-bolt 71. said bolt passing through a slot 76 in the` bracket 72.

In order to cause angular movement of the splitting knife to take place in acm'wdanf-e with the extent ot separation ot the feed rolls, and consequently in aecordzoiee with the thickness ot the stock`v` a yoke 7.3, clamped to the knife holder 59 by a pinchbolt 76 is provided `with teeth which mesh with similar teeth liirnied on one end ot' th horizontal arm ot a bell-crank level' 81 pivoted to the frame of the machine at 83 and having' at the upper end oi' its vertical arm a` roll. This roll is received in a slot ST formed in a disk 89 which is Afastened to the castingl in which the bearings ot' the upper feed roll shaiit is mounted by screw-bolts ill,

the stems ol which pass through arcuate slots 93 in the disk and a rc tliieroled into the casting. It is thus possible to adjust the Ydisk singularly and by changing the :ingg'ular inclination of the slot 87 to determine the extent of angular movement which is imparted to the splittingr knife S) by n given oxtent of bodily movement of the 'feed rolls.

In machines of this general type in which a| pair of :feed rolls and an angrularllv inovable knife are employed it is desirable that the edge of the knit'e be spaced considerably from the bite olE the rolls so as to provide l'or a considerable extent of annular move-inou;

passes up through a bore in the casting h v 'which the upper roll is carried and is urged downwardly at all times by z, spring' 103,

Cil

il l) the limit o downward movement `heilig determined by nuts 105 threaded on the stem. The mount ing of the lower` preeser is similar to that olli' the upper and will not `he described in detail. In order to provide for :iieeding the last portion oit the stock "to the imite a pusher U vis provided which extends up through a slot in thetahle 110 and is eupported adjacent the iee `l rolls ou the upper end of a rod 117 which is urged upwardly into the position shown hya spring lilo hut may yield 'in opposition to the toreo of the spring. Normally the puaher oecuoies the position shown. When, however, a niece oit stock ie placed upon the tahle" 110 and gireeented to the 'feed rolhtthe pusher is Forced down and reciprmaates continuouslyY heneath the stock until the roerend 0l the Stoch cloee to the hite of the 'feed rolle. l-lit this tnie on one olf itfihaelr-strohes the pusherrines, engagee the end of the stock aud 'feeds the larsl' 'portion therrm'tl toytho liuiifo7 the driving iuecluruisnl ol thorpuehor heini: coustructial to impart the foune rate oit leed niorenieut to the stock `an do the iced rolls. rl"he j iusher is reeiprocated liront ay eraulspinl/Il t a nuiuntedin a dislion thix end oi thesha'lit 2l, Said, crank-pinouterino' au elongated socket iliorincd iu one end ol theipueher 109.; liu order `to sul)- port this` ein oiithe pueher a liulnlil `ie oiroted at i lower oud to `the traine or the ohnehine hy a properlyr-shapeilecreu'holt lill and at its ruiner end 11o the pusherfhy a ,-iiulilar sci ow-vluilt lili. rlll-'fellajtt 2l rotated :troni the gear 2li' which nleshea with a lirreljl il last to ea'id shaft.` l

ln the operation. oi the machine a sheet of eltoell is presented `to the feed `rolle with `one ol its; side edges in engaf fuient with an educ oaoje 133. its the oto; in Aledthrough the nonrliine, the lnile 7 cuts liroui itlas rip the width olf -which ie equal tothe distancefrom the l re ol the lini'lie 7 `to the `face `ort the odge aggem and the knife Sl .splitst therstrip onallr. The edgegagro 'l harz: a tted l (sce lFioj. ll through which .paesesa mrow-holt 1,35 'of which it ie fuljiufitahlr held in lnoeithiu. le shown in, the dra'wii' 'in rsoaition o'lt thisv gage is such that the axis al'iout Ywhich the ,failittiuoj` huite 5;) iaanorelari)7 niovahle ia loeaiml midway hetweeu the i' lo nga-gre and ther o 'l and the axis o'l the lently coincide-i with the cent Htrip which is out oli. lillhen ihre o'a is adjusted eo es to (muse a narrower s* uli to he cut oli" and the splitting` lolite is :regularly adirr-:tedH hr looecniiu :l1-holt 7f3 and torninol the holder o9 in carrier (il to caufste the narrower strip to he sulit diagonall t7 from corner to corner (or liroio a. point spaced lrooi one corner to a point equallyY epaced from the diagonally opposite corner) the axis ot angular movement of" the `knife will. he somewhat to the `left (as viewedfinFig. il) ofthe centerline of the strip. lilitherto the verticaladjustlment oit' the carrier 6T has heen depended `upon to correct thetinaccuracy` with .el lieieut precision, hut in therpreflent con ietion` a horizontal adj-ustnieut oli the carrier (57i ie poesihle by reason olf `the niountjiugot the steluiolf the ci'trrier ou the horizontally adjustahle hracliet 79. ln, ordcrito permit split and decreasml wheita "wider-istrip into` he split. With this construction itin poe sihle to Shift-the axle oil angular oioroluent of tho splittinglcnife luufizoutalliY and `thus to maintainsaid axis in register with the centerline of any giron strip whether `wide or narrow The purpose of the `proitisiou tor vertical adjustment ,et the knife carrier is principally to allow :for inaeclufar-u in the manufacture of the machine or for wear of the parts. rFhe extent of the vertical adjustrnent is `:small in practice and `is aisimllwY permissible hure-uson of the loose nice-h of the `teeth onthe parte 7V and S1. lfineeee- Sary. h oweveluy the mesh oliitherro teeth may he @hangt-id 'when the carrier (i7 is adjust-od. l "Llthough the invention has heen oetjlorth as elnhodied iu a particular machiner it should he understood that the invention is not limited in thescooeoi'its implication to the particiilar rnznhine rdiieh hasn` heen shown andalescrihed. i

Haring thus d eacrihed Juju in veutiou g wh at I claim as new and desire to feocu re hy Lettere Patent ol the United States i" l. A uuichiuo ofthe `clans dosrrihech har` linten in coinhination. means tor i leef'linoj a .etrui ot Stoch. means for tQ'uidino the etrin iu ite inoqeunuit.` a knife for emitting the :atrio `ou au iuClihel said rlrnife heinp; conetrueteel :uularranged tohc movedangular-lii hy thel etrioin accordance `with 'mriatione in the thiekneee tlnireoll andineaus ior producing relatir adjustimgut hetuiecu the lnite and .the gjnidingg ineansto canse the longitiulinal conter line orlflthe ,atrio `tot register with the l Aknife, means for feeding a strip of stock to the knife comprising separable members the extent of separation of which controls the angular position of the knife, means for guiding the strip by engagement with both edges thereof to the feeding means and the knife, and means whereby relative bodily ad-A justment between the knife and the guiding means may Ibe produced to bring the aXis of f angular movement of the knife into re iste: with the center lines of strips of di erent widths. 4.",A machineV of the class described, having, in combination, means for feeding a strip of stock, an edge gage, a knife for splitting the strip on an incline, said knife being constructed and arranged to be moved angularly by the strip in accordance with variations in the thickness thereof, and means whereby the knife may be adjusted with respect to the edge gage to bring theaxis about which it moves into line with the longitudinal center lines of strips of dilferentwidths.

A machine of the class'described, havjing, Vinv combination, means for feeding a Ystrip of stock, ajknife 'for splitting thestrip onV an inclin'efsaid` knife being-constructed vand arranged to be moved augularly bythe strip A1n accordance with` variations in the 'thickness' thereof, and means whereby the axis about which theangular movementof the knifetakes place may be adjusted widthywise of the strip and at an angle to said widthwise adjustment. j

6. A machine of the class described, vhaving, in combination, a, pair of members for 'engaging a piece of stock, i'i'ieans for causi' ing said membersV to move equally toward and from each other in accordance with a dimension of the stock at the point engaged, a movable knife, means responsive to the extent of" separation of themembers for con trollingfthe position of the knife, and means whereby the knife may be adjusted bodily in two idirections.

7.V A machine of the class described, having, in combination, a pair of members for engaging a piece of stock on two sides to feed it, means .for causingv said members to move equally toward and fromaach other in accordance with a dimension of the stock :it the point engaged, a movable knife.l mean`l responsive to the extent of .separation of the members for controlling thc position of the knife, and means whereby the knife may be adjusted bodily in two directions.

8. A machine of the class descrilnxd, having, in combination, a pair of menlbersI for engaging a piece of stock, means for causingl said mf bers to move equally toi'fard and from eaf'h other in accordance with a dimension of the stock at the point engaged, an angular-ly movable knife, means responsive `to the extent of separation of the members liiodily in two directions.

9. A machine of the class described, having, in combination, a pair of separable rolls for feeding a piece of stock, means for 1otating the rolls, connecting means between the rolls constructed and arranged to conipel them, when separated or caused to approach, to move equally in opposite directions, a knife, connecting means between thel knife and one of the rolls for automatically varying the inclination of the knife in accordance with the extent of separation el' the rolls, and means whereby the knife may be adjusted bodily in two directions.

l0. A machine of the class described, having, in combination, means for feeding u piece of stock. a knife arranged to cut the stock on a. bevel, and means including an extensible lever for connecting the knife with the feeding means to permit horizontal :ut justment of the knife.

l1. A machine of the class described, having, in combination, a pair of separable members between which the stock is fed, a splitting knife the inclination of which is controlled by the extent of separation of said members, and means for compelling the movements of said members to be equal in extent and opposite in direction, said means includingv two arms by which the separable members are carried, yielding means tending to move the arms toward each other, racks formed on said arms, and a pinion in engagement with the racks.

EDWIN W. SMITH.

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